common.h: Cosmetic change to SET_THREAD_NAME macro when HAVE_PTHREAD_SET_NAME_NP defined

Use sizeof rather than hard coded constant in snprintf

Signed-off-by: Hal Rosenstock <hal@mellanox.com>
ssa_signal_handler.c: Cosmetic formatting changes

Signed-off-by: Hal Rosenstock <hal@mellanox.com>
ssa.c: Cosmetic formatting change

Signed-off-by: Hal Rosenstock <hal@mellanox.com>